Question

) 5g mixture of iron fillings and sulphur powder, are taken in a china dish. What would you observe: [2] i) If mixture of iron fillings and sulphur powder is heated and a magnet is brought near it. ii) If a mixture of iron fillings and sulphur is kept without heating and carbon disulphide is added to it.​

Answer 1

Answer:

When iron filings and sulphur powder are mixed, both retain their properties. It means they have not undergone any chemical reaction. Therefore, mixing of iron and sulphur is a physical change. When iron filings and sulphur powder are mixed and heated they undergo a chemical reaction and form ferrous sulphide (FeS).